Table 2.

provides the details of the three datasets used and the number of selected images from each dataset.

Datasets	Databases	Number of X-ray Chest Images in each dataset	Amount of X-ray Chest Images Selected for this Study
Ozturk et al. 2020	COVID-19 X-ray image (Cohen, 2020)	COVID-19: 125 images	COVID-19: 125 images
	ChestX-ray8 (Wang et al. 2017)	Normal: 500 images Pneumonia: 500 images	Normal: 329 images Pneumonia: 325 images
(Mooney, 2020)	Chest X-Ray Images (Mooney, 2020)	Normal: 1592 images Pneumonia: 4273 images	Normal: 1343 images Pneumonia: 1345 images
(Chowdhury et al., 2020, Rahman et al., 2021)	COVQU (Chowdhury et al., 2020, Rahman et al., 2021)	COVID-19: 3616 images Normal: 10,192 images Pneumonia: 1345 images	COVID-19: 1545 images
	Total		COVID-19 = 1670 images Normal = 1672 images Pneumonia = 1670 images